Most advice about AI context management assumes you're building a full system. Vault architecture, note types, skill guides, linking rules — useful eventually, but a lot to absorb before you've even started. This is the minimal version. Three notes. You can create them in 20 minutes. They'll cut your session startup time in half before you've built anything else. Note 1: The project hub One file per project. Call it [ProjectName] Hub.md . Put it somewhere you'll remember. Contents: # [Project Name] Hub ## What This Is One sentence. What this project is trying to accomplish. ## Current State What's true right now. Not the goal — the present position. - What's built / done - What's in progress - What's blocked ## Stack / Environment The non-obvious technical details: - Language/framework versions - Deployment target - Key external dependencies - Anything that constrains how the AI should suggest solutions ## Key Files The 3–5 files the AI should know about. Paths, not descriptions.…